Butler.
334.
The fountain of content must spring up in the mind, and he who has so little knowledge of human nature as to seek happiness by changing anything but his own disposition will waste his life in fruitless efforts, and multiply the griefs which he purposes to remove.
Johnson.
335.
In all things, to serve from the lowest station upwards is necessary. To restrict yourself to a trade is best. For the narrow mind, whatever he attempts is still a trade; for the higher, an art; and the highest in doing one thing does all, or, to speak less paradoxically, in the one thing which he does rightly he sees the likeness of all that is done rightly.
Goethe.
336.
Misanthropy ariseth from a man trusting another without having sufficient knowledge of his character, and, thinking him to be truthful, sincere, and honourable, finds a little afterwards that he is wicked, faithless, and then he meets with another of the same character. When a man experiences this often, and more particularly from those whom he considered his most dear and best friends, at last, having frequently made a slip, he hates the whole world, and thinks that there is nothing sound at all in any of them.
Plato.